40479589 has 2 divisors, whose sum is σ = 40479590. Its totient is φ = 40479588.

The previous prime is 40479581. The next prime is 40479611. The reversal of 40479589 is 98597404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26863489 + 13616100 = 5183^2 + 3690^2 .

It is a cyclic number.

It is not a de Polignac number, because 40479589 - 2³ = 40479581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40479581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20239794 + 20239795.

It is an arithmetic number, because the mean of its divisors is an integer number (20239795).

Almost surely, 2^40479589 is an apocalyptic number.

It is an amenable number.

40479589 is a deficient number, since it is larger than the sum of its proper divisors (1).

40479589 is an equidigital number, since it uses as much as digits as its factorization.

40479589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 40479589 is about 6362.3571889670. The cubic root of 40479589 is about 343.3565723003.

The spelling of 40479589 in words is "forty million, four hundred seventy-nine thousand, five hundred eighty-nine".